Let's Unmix Audio Unit
OFFICIAL PAGE: Let's Unmix Audio Unit (Apple App Store Preview)
Let's Unmix Audio Unit, which makes use of Deep Learning technologies, is is the world first Audio Unit v3 plugin according to its developer and is available as a free download for both the iPad and iPhone. The app will take a mono or stereo source file and return five stems: vocals, drums, bass, piano and the remaining music. The developer is charging US$4.99 for the Premium Edition. The app is available on the Apple App Store. Details are available at the link above.
Screenshot courtesy of Christopher Kissel